He has, on several occasions, teamed up with fellow LP'er Madamluna on co-op LPs. To quote the eponymous second author...

On that fateful day in 1972, Deceased Crab was a small-time guitarist in the Bay Area hopping from band to band. Madamluna was﻿ a waitress in a small cafe off the side of the interstate. When their eyes met, they knew it was destiny.
They would later disappear in a tragic macadamia nut accident, never to be seen until thirty-five years later, when they suddenly resurfaced on Youtube with a series of Let's Play videos that are said to be "pretty good, I guess."

In the future, Deceased Crab was an inmate at the Black Moon State Penitentiary. He escaped﻿ with 14 other inmates, and fled to the only safe place; the past. Arriving at an integral part of American history, and having damaged his time machine, he reformed and devoted his life to making his country and history correct.

Actually, Madamluna is the world's leading expert on forensic psychology, and I am a shady used car salesman. I sold her a bad﻿ car, and she keeps having to get it repaired. I do this for tax purposes!

Creator Breakdown: He had one of these in the middle of his Shadowrun LP all because his viewers tried to correct his pronunciation of the name "Kitsune" complete with "The Reason You Suck" Speech and disabling the comments for several parts. Whether this was for comedy purposes is still unknown.

Deceased Crab: I was going to turn around and hurl insults at him, but somehow I don't think 'Bake Sale' would register with that guy.

Grammar Nazi: Don't use common internet expressions (like "lol", "u" instead of "you", "r" instead of "are") or bad grammar when you comment on one of his videos. If you're lucky, he will hide the comment. If you're less lucky, he will block and mock you.

And a minor one also in his first La-Mulana LP, his reaction to Getting the Flare Gun before getting the gloves resulted in the following video being "La-Mulana", with "Lemeza" beating up on "Deceased Crab"

Heroic Comedic Sociopath: Constantly, though subverted for his Eversion LP. He's had no problem being a mass murderer in Actraiser or driving Iji to complete sociopathy.

Never Split the Party: In his LP of Sweet Home, he attempts to keep the Five-Man Band as close together as possible, using the 'Call' feature to ensure everybody participates in most of the battles and gets experience. Considering that monsters seem particularly prone to attacking whenever there's a decent amount of distance between the groups...

He was fairly reserved in the first few episodes of ActRaiser, as well

As he explained when he went back to his usual hammy-ness for ActRaiser, he did so because so many people asked him if he was depressed or if something was wrong because he wasn't at his usual level of energy. As he put it: "Apparently if I don't talk like a game show host, everyone assumes I'm depressed."

Promoted Fanboy: NIGORO, the development team behind La-Mulana, liked his LP of the game so much that they mentioned him in the site's official blog. Not only that they put his name in the Wii Ware version's credits under "Special Thanks".

Real Men Wear Pink: Real men recover from wisdom tooth removal by playing Barbie & The Magic of Pegasus.

Stealth Parody: For Don't Look Back and I Was in the War, he doesn't mention that he switched the soundtracks at any point, and comments on the games as if they still had their original soundtracks. For Harpooned! he pretends to take the game completely at face value and insists that it doesn't have any message.